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Unread 07-16-2013, 03:38 PM   #1
ladydrac24
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1994 FSJ Cherokee 
 
Join Date: Jul 2013
Location: norcross, Georgia
Posts: 17
Help With My Jeep

I have a 94 jeep grand Cherokee limited that is my baby. However it will not start. The check engine light is not on and just replaced the starter 2 weeks ago. it wras running fine with no signs of problems. I had to go to work that was 25 miles away and it was doing fine. when i got into the jeep to head home it would not start. it is turning over but not catching fire. what could it be.



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Unread 07-16-2013, 03:44 PM   #2
dnuccio
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1995 ZJ 
 
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Location: Phoenix, AZ
Posts: 3,479
could be anything. check for fuel and spark first.
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Unread 07-16-2013, 03:47 PM   #3
StPaul59
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1998 ZJ 
 
Join Date: Mar 2013
Location: St Paul, MN
Posts: 304
Could be a bad ignition coil or fuel pump
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Unread 07-16-2013, 03:48 PM   #4
dellis
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1998 ZJ 
 
Join Date: Feb 2013
Location: Vienna, VA
Posts: 313
Many, many things. Let's go over two QUICK things first (this is not meant to be insulting, just covering some basics):

(1) Does it have gas? How do you know ... don't trust your gauge, because our Jeeps have a tendency to show 1/4 tank when we are really empty.
(2) Put it in neutral and attempt to start it.

If that doesn't work for you, are you able to do any testing on the car? Are you able to test for spark and fuel?
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Unread 07-16-2013, 03:49 PM   #5
tucsonzj
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1995 ZJ 
 
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Location: Boston, MA
Posts: 2,114
does it crank? attempt to turn over? details man details? other wise we're throwing darts in a dark bar full of people
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Unread 07-16-2013, 04:57 PM   #6
ladydrac24
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1994 FSJ Cherokee 
 
Join Date: Jul 2013
Location: norcross, Georgia
Posts: 17
Yes, the truck has over a half a tank of gas in it. every now and then when it did run we would have to put it in neutral to get it to crank or push it a little harder into park to get it to crank. it does attempt to turn over just seams like it is not catching fire.
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Unread 07-16-2013, 05:14 PM   #7
dellis
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1998 ZJ 
 
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Quote:
Originally Posted by ladydrac24 View Post
every now and then when it did run we would have to put it in neutral to get it to crank or push it a little harder into park to get it to crank. it does attempt to turn over just seams like it is not catching fire.
This sounds like a Neutral Safety Switch issue. Moving the shifter around might solve it temporarily, but it needs attention.

Outside of this, you would at least need to tell us if (a) you have spark, (b) you have fuel at the rail, and/or (c) your ASD relay is engaged in order for us to really help you begin to isolate the problem.
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Unread 07-16-2013, 05:47 PM   #8
ladydrac24
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1994 FSJ Cherokee 
 
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Location: norcross, Georgia
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yes, i have fuel in the rail. not sure about the asd yet
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Unread 07-16-2013, 05:59 PM   #9
dnuccio
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if its turning over, its not the neutral safety switch. the NSS will not let it crank unless the transmission is in park or neutral.
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Unread 07-16-2013, 06:38 PM   #10
ladydrac24
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1994 FSJ Cherokee 
 
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Location: norcross, Georgia
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ok just replaced the ASD relay and that was not the problem. the jeep is turning over just not starting
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Unread 07-16-2013, 07:14 PM   #11
tucsonzj
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1995 ZJ 
 
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Location: Boston, MA
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are you getting spark? could be ignition coil. crank shaft position sensor
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Unread 07-16-2013, 07:15 PM   #12
ZeeJay1997
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Does the check engine light illuminate for 3 seconds when you turn the key to the ON position? If it passes the bulb check when you turn the key on, thius means your PCM is not dead.

It may have a code that doesn't turn the light on

(1) Cycle the ignition key On - Off - On - Off - On
within 5 seconds.
(2)The check engine light will start to flash quickly with a small pause in between then a medium pause to indicate the next number in the two digit number and then a long pause before the next set of flashing for the next code. Repeat as many times as it takes to read the codes.
(3) A DTC number 55 will always be the last code
to be displayed. This indicates the end of all stored
codes. After code 55 has been displayed, the test is over.
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Unread 07-16-2013, 07:44 PM   #13
ladydrac24
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1994 FSJ Cherokee 
 
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Location: norcross, Georgia
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no the check engine light does not come on at all just the abs, break, air bag and seat belt light comes on.
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Unread 07-16-2013, 07:50 PM   #14
ZeeJay1997
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1997 ZJ 
 
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Location: Sweet Home, Alabama
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That means one of several things.

PCM is dead
PCM has no power because a fuse is blown
Bulb is blown (have you ever noticed it working)?

The fuse for the PCM is in the fusebox under the hood. I'm not sure if it is a large or small fuse on the 94.

If you find it blown, the wires for your O2 sensor may have been damaged by the drive train, exhaust pipe, or sometimes the burn up at the exhaust manifold.

This is a common occurrence on these ZJs.
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Unread 07-16-2013, 07:55 PM   #15
ladydrac24
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Location: norcross, Georgia
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yea the light was working that day. thanks so much you have been a big help.
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